Question : People living at sea level have around 5 million RBC per cu.mm of their blood where as those living at an altitude of 5400 metres have around 8 million. This is because at high altitude

Question : People living at sea level have around 5 million RBC per cu

1.	Question : People living at sea level have around 5 million RBC per cu.mm of their blood where as those living at an altitude of 5400 metres have around 8 million. This is because at high altitude
Answer» People eat more nutritive food, THEREFORE more RBC are formed People get pollution free AIR to breathe and more OXYGEN is available Atmospheric `O_2`level is less and more RBC are needed to absorb the required amount of `O_2` to survive There is more UV radiation which enhances RBCs PRODUCTION Answer :C